Key



J. E. PANKRATZ.

KEY.

APPLICATION FILED SEPT. I, 1920.

1,870,552, Patented Mar. 8, 1921.

JZE, Panhradtz UNITED STATES JESS E. PANKBATZ, O3? CLEVELAND, OHIO.

KEY.

Application filed September 7, 1920.

To all whom it may concern:

Be it known that I, Jnss E. Pilxnna'rz, a citizen or" the United States, residing a Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Keys, of which the following is a specification, re'lerencc being had to the accompanying drawings.

This invention relates to certain improvements in keys and has relation more particularly to a key oi blade type, and it is an object of the invention to provide a device of this general character with novel and improved means whereby it may be employed with convenience and facility for removing from one side of a door or the like a key inserted in the lock from the opposite side irrespective of the position of the key.

Another objectof the invention is to provide a novel and improved device of this general character embodying a blade key of a skeleton type and wherein the shank of the key has slidab-ly engaged therewith a split tube adapted, when extended, to engage from one side of a door or the like a key inserted in the lock from the opposite side of said door or the like, whereby said inserted key may be readily and conveniently adjusted in a manner to facilitate its displacement or removal without the necessity of breaking down the door as is now generally required.

The invention consists in the details of construction and in the combination and arrangement of the several parts of my improved key whereby certain important advantages are attained and the device rendered simpler, less expensive and otherwise more convenient and advantageous for use, as will be hereinafter more fully set forth.

The novel features of my invention will hereinafter be definitely claimed.

In order that my invention may be the better understood, I will now proceed to describe the same with reference to the accompanying drawings, wherein:

Figure 1 is a view partly in elevation and partly in section illustrating a key constructed in accordance with an embodiment Specification of Letters Patent.

Patented Mar. 8, 1921.

Serial No. 408,487. v

of my invention and in operative engagement with an inserted key to be removed.

Fig. is a view in perspective of my improved key and a key with which the same is adapted to be operativcly engaged, and

Fig. 3 is a view partly in transverse section and partly in end elevation of my improved key as herein set forth.

As disclosed in the accompanying drawings, K denotes a skeleton key of a blade type and which has slidably mounted on the shank or stem 1 thereof a spit tube 2, said tube being of a length substantially coextensive vith the length of the shank or stem 1.

The blade 3 of the key K extends through the split of the tube 2 whereby said tube is held against rotary movement independently of the shank or stem 1 and whereby the maintenance of said tube in applied position is materially facilitated.

lVhen it is desired to remove a blade key inserted in a look from the opposite side of a door or the like, the tube 2 is moved longitudinally of the shank or stem 1 to extend a desired distance beyond the outer or free end of said shank or stem. The extended portion of the tube is then inserted within the lock and the free end portion of the stem or shank of the inserted key is received within the extended portion of the tube 2. The tube 2 is then preferably manipulated in order to permit the blade. of the inserted key to be received within the split of the tube 2. lVhen this engagement has been effected with the inserted key, the key K may then be readily turned in a manner to turn the inserted key into a position whereby it may be readily .torced out of the look by inward movement of the key K.

From the foregoing description it is thought to be obvious that a key constructed in accordance with my invention is particularly well adapted for use by reason of the convenience and facility with which it may be assembled and operated, and it will also be obvious that my invention is susceptible o1 some change and modification without departing from the principles and spirit thereof and for this reason I do not Wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice except as hereinafter claimed.

I claim:

1. In combination with a key including a stem and a blade, a tube slidably mounted on the stem, said tube being split longitudinally with the blade of the key extending through the split.

2. In combination With a key including a stem and a blade, a tube slidably mounted on the stem, said tube being split longitudinally with the blade of the key extending through the split, said tube being of a length substantially coextensive With the length of the stem.

In testimony whereof I hereunto aflix my signature.

JESS E. PANKRATZ. 

